Sewing-machine.



R. A. BELLAMY.

SEWING MACHINE. APPLICATION FILED MAYIE, 1909.

951,?94= Patented Mar. 15.1910.

Email- 1 U m Z I 09 I I fi mmim ROBERT A. BELLAMY, OF ELK CITY,OKLAHOMA.

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cantor.

Specification of Letters Patent.

Application filed May 15, 1909.

Serial No. 496,205.

To all whom it may concern:

Be it known that 1, ROBERT A. BELLAMY, a citizen of the United States,residing at Elk City, in the county of Beckham and State of Oklahoma,have invented certain new and useful Improvements in Sewing- Machines,of which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to improvements in sewing machines and moreparticularly to an improved construction for operating the presser foot,whereby fancy work, button holes, darning, etc, may be done by anordinary sewing machine.

The object of the invention is to provide a simple and practicalmechanism by means of which the presser foot will be given both anupward and a downward movement while the needle bar makes one stroke sothat the presser foot is allowed to rest on the cloth when the stitch ismade and also when the stitch is tightened.

The above and other objects of the invention are attained in thepreferred embodiment of the invention illustrated in the accompanyingdrawings, in which Figure 1 is a view of a portion of the head of asewing machine with the invention applied to the same; and Figs. 2 and 3are detail horizontal and vertical sectional views, taken, respectively,on the planes indicated by the lines 2-2 and 3-3 in Fig. 1.

Referring more particularly to the drawings, 1 denotes the head of asewing machine of ordinary construction having the usual verticallyreciprocating needle bar 2 and presser foot bar 3.

The invention comprises a link 4: pivoted at its upper end at 5 to thepresser bar 3 and having its lower end connected by a rivet or otherpivot 6 to the short arm 7 of a bell crank or lever 8. The long arm 9 ofthis lever or hell crank S is slotted longitudinally, as shown at 10, toreceive the pin 11 projecting from the needle bar 2. At the angle of thelever 8 is a laterally projecting fulcrum pin 12 arranged in a verticalslot 13 formed in the presser bar 3. Said fulcrum pin 12 is adapted tobe engaged and supported by a vertically adjustable member 14 preferablyin the form of a screw arranged for movement in a vertical slot 15 inone wall of the head or support 1 and having on its outer end a milledfinger piece or head 16 and upon its inner threaded portion a clampingnut 18.

In operation, when it is desired to use the machine for embroidering,making button holes, darning, screw 14: is screwed in the upper portionof the slot 15 so that it will engage and support the fulcrum pin 12.Then thus positioned, as shown in the drawings, and the machine isoperated, the needle bar 2 will oscillate the slotted arm 9 of the bellcrank or lever 8 vertically and the other arm 7 of said bell crank orlever will oscillate to cause the link 4: to raise and lower the presserbar 3 so that the latter will be given an up and down movement while theneedle bar makes one stroke. Then the pin 14 is arranged in the lowerportion of the slot 15 the machine will operate in the ordinary manner.

\Vhile the preferred embodiment of the invention has been shown anddescribed in detail, it will be understood that various changes in theform, proportion, arrangement and construction of parts may be resortedto within the spirit and scope of the invention.

Having thus described the invention what is claimed is:

1. The combination with the needle and presser bars of a sewing machine,of a horizontally disposed fulcrum, a bell crank lever pivoted at itsangle on said fulcrum and having a vertically extending arm, and ahorizontally projecting arm, the last mentioned arm having a slot andpin connection with the needle bar, and a link connection between thevertical arm of said bell crank and said presser bar.

2. The combination with the needle and presser bars of a sewing machine,of a normally inoperative link and lever connection between said barsfor imparting two opposite movements to the presser barduring onemovement of the needle bar and means for rendering said link and leverconnection operative.

3. The combination with the needle and presser bars of a sewing machine,of a vertically adjustable fulcrum pin, a lever mounted on said pin andhaving a loose connection with-the needle bar, whereby it will beoperated by the latter and a link con nection between said lever and thepresser bar.

latcnted Mar. 15, 1910.

etc, the supporting pin or i 4. The combination with the head of ajustable member arranged on the head and i0 sewlng machlne and theneedle and presser' adapted'to engage and support said fulcrum barstherein, sald presser bar being formed pm.

with a vertical slot, of a fulcrum pin slid- In testimony whereof Ihereunto aflix my ably arranged in said slot, a lever on said signaturein the presence of two Witnesses. pin and having a slot and pinconnection ROBERT A. BELLAMY. With the needle bar, whereby the latterWill \Vitnesses:

operate it, a link connection between said J.B.1VINN,

lever and the presser bar and a vertically ad- J. G. INNES.

